It's the 40GB and I haven't tried. How long have you had it? I've had mine for about 4-5. It stopped last November. Unfortunately I don't think PS4 will be backwards compatible.Looks like it is indeed a YLOD. Depending on what your model is, you might be able to get the disk out without opening it up. Have you tried holding the eject button after flipping the power switch on the back? Apparently, that works for some models. Not on my fat 80GB, unfortunately.
Gonna have to consider my options carefully, especially since the PS4 is due this winter.